CWmike writes: "Start-up Millenniata and LG plan to soon release a new optical disc and read/write player that will store movies, photos or any other data forever. The data can be accessed using on any current DVD or Blu-ray player. The M-Disc can be dipped in liquid nitrogen and then boiling water without harming it. It also has a Defense Department study backing up the resiliency of its product (PDF document) compared with other leading optical disc competitors. The company would not disclose what material is used to produce the optical discs, referring to it only as a 'natural' substance that is 'stone-like.' Like DVDs and Blu-ray discs, the M-Disc platters are made up of multiple layers of material. But there is no reflective, or die, layer. Instead, during the recording process a laser 'etches' pits onto the substrate material."